Just put my first bike up for sale...
My Marin. It's been properly serviced (and had a wheel trued :o) and has been listed on ebay with everything crossed that it will go for a reasonable price. Not too sure about that last one as prices seem pretty low at the moment. Anyway. I want to buy the mixte I posted about on the Mixte thread. It feels really odd selling it, I suppose also because I sold Small Girl's balance bike too last week and I'm rather more used to bikes coming in than bikes going out. The Mister reasonably pointed out that 4 bikes would probably be one too many, so the Marin has to go to make room for the mixte (and to help pay for it). It's not ridden that much any more, most of my rides are on the Vita.
Tell me about when you parted company with your first adult bike, please.